Ergonomic keyboard



FIG. 1 is a perspective view of an ergonomic keyboard in according with the design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a rear elevational view thereof;

FIG. 4 is a left side elevational view thereof;

FIG. 5 is a right side elevational view thereof;

FIG. 6 is top plan view thereof; and,

FIG. 7 is bottom plan view thereof; and,

FIG. 8 is a perspective view thereof wherein the keyboard is shown split. 

The ornamental design for an ergonomic keyboard, as shown and described. 